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  <title>Class: Origami::Filter::ASCIIHex</title>
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    <div id="classHeader">
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        <tr class="top-aligned-row">
          <td><strong>Class</strong></td>
          <td class="class-name-in-header">Origami::Filter::ASCIIHex</td>
        </tr>
        <tr class="top-aligned-row">
            <td><strong>In:</strong></td>
            <td>
                <a href="../../../files/origami/filters_rb.html">
                origami/filters.rb
                </a>
        <br />
            </td>
        </tr>

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            <td><strong>Parent:</strong></td>
            <td>
                Object
            </td>
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        </table>
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  <div id="contextContent">

    <div id="description">
      <p>
Class representing a filter used to <a
href="ASCIIHex.html#M000304">encode</a> and <a
href="ASCIIHex.html#M000305">decode</a> data written into hexadecimal.
</p>

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   </div>

    <div id="method-list">
      <h3 class="section-bar">Methods</h3>

      <div class="name-list">
      <a href="#M000305">decode</a>&nbsp;&nbsp;
      <a href="#M000304">encode</a>&nbsp;&nbsp;
      </div>
    </div>

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    <!-- if includes -->
    <div id="includes">
      <h3 class="section-bar">Included Modules</h3>

      <div id="includes-list">
        <span class="include-name"><a href="../Filter.html">Filter</a></span>
      </div>
    </div>

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    <div id="methods">
      <h3 class="section-bar">Public Instance methods</h3>

      <div id="method-M000305" class="method-detail">
        <a name="M000305"></a>

        <div class="method-heading">
          <a href="#M000305" class="method-signature">
          <span class="method-name">decode</span><span class="method-args">(string)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p>
Decodes given data writen into upcase hexadecimal representation.
</p>
<table>
<tr><td valign="top"><em>string</em>:</td><td>The data to <a href="ASCIIHex.html#M000305">decode</a>.

</td></tr>
</table>
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000305-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000305-source">
<pre>
     <span class="ruby-comment cmt"># File origami/filters.rb, line 282</span>
282:       <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">decode</span>(<span class="ruby-identifier">string</span>)
283:         
284:         <span class="ruby-identifier">input</span> = <span class="ruby-identifier">string</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-value">?&gt;</span>) <span class="ruby-operator">?</span> <span class="ruby-identifier">string</span>[<span class="ruby-value">0</span><span class="ruby-operator">..</span><span class="ruby-identifier">string</span>.<span class="ruby-identifier">index</span>(<span class="ruby-value">?&gt;</span>) <span class="ruby-operator">-</span> <span class="ruby-value">1</span>] <span class="ruby-operator">:</span> <span class="ruby-identifier">string</span>
285:         
286:         <span class="ruby-identifier">digits</span> = <span class="ruby-identifier">input</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-value str">&quot; \f\t\r\n\0&quot;</span>).<span class="ruby-identifier">split</span>(<span class="ruby-regexp re">//</span>)
287:         
288:         <span class="ruby-keyword kw">if</span> <span class="ruby-keyword kw">not</span> <span class="ruby-identifier">digits</span>.<span class="ruby-identifier">all?</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">d</span><span class="ruby-operator">|</span> <span class="ruby-identifier">d</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/[a-fA-F0-9&gt;]/</span> }
289:           <span class="ruby-identifier">raise</span> <span class="ruby-constant">InvalidASCIIHexStringError</span>, <span class="ruby-identifier">input</span>
290:         <span class="ruby-keyword kw">end</span>
291:         
292:         <span class="ruby-identifier">digits</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-value str">&quot;0&quot;</span> <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">digits</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">%</span> <span class="ruby-value">2</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span>
293:         
294:         <span class="ruby-identifier">bytes</span> = []
295:         <span class="ruby-keyword kw">for</span> <span class="ruby-identifier">i</span> <span class="ruby-keyword kw">in</span> <span class="ruby-value">0</span><span class="ruby-operator">..</span><span class="ruby-identifier">digits</span>.<span class="ruby-identifier">size</span><span class="ruby-operator">/</span><span class="ruby-value">2</span><span class="ruby-operator">-</span><span class="ruby-value">1</span> <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">bytes</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">digits</span>[<span class="ruby-value">2</span><span class="ruby-operator">*</span><span class="ruby-identifier">i</span>].<span class="ruby-identifier">to_s</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">digits</span>[<span class="ruby-value">2</span><span class="ruby-operator">*</span><span class="ruby-identifier">i</span><span class="ruby-operator">+</span><span class="ruby-value">1</span>].<span class="ruby-identifier">to_s</span> <span class="ruby-keyword kw">end</span>
296:         
297:         <span class="ruby-identifier">bytes</span>.<span class="ruby-identifier">pack</span>(<span class="ruby-value str">&quot;H2&quot;</span> <span class="ruby-operator">*</span> (<span class="ruby-identifier">digits</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">/</span> <span class="ruby-value">2</span>))
298:       <span class="ruby-keyword kw">end</span>
</pre>
          </div>
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      </div>

      <div id="method-M000304" class="method-detail">
        <a name="M000304"></a>

        <div class="method-heading">
          <a href="#M000304" class="method-signature">
          <span class="method-name">encode</span><span class="method-args">(stream)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p>
Encodes given data into upcase hexadecimal representation.
</p>
<table>
<tr><td valign="top"><em>stream</em>:</td><td>The data to <a href="ASCIIHex.html#M000304">encode</a>.

</td></tr>
</table>
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000304-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000304-source">
<pre>
     <span class="ruby-comment cmt"># File origami/filters.rb, line 274</span>
274:       <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">encode</span>(<span class="ruby-identifier">stream</span>)
275:         <span class="ruby-identifier">stream</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-value str">&quot;H2&quot;</span> <span class="ruby-operator">*</span> <span class="ruby-identifier">stream</span>.<span class="ruby-identifier">size</span>).<span class="ruby-identifier">join</span>.<span class="ruby-identifier">upcase</span>
276:       <span class="ruby-keyword kw">end</span>
</pre>
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